SOLUTION: Please solve and explain 2x^2-6>11

Question 1021512: Please solve and explain 2x^2-6>11
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

So now you want to graph the function and look for the region where the function is greater than zero (above the x-axis).
You can solve for when the function equals zero first.

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So now choose a point in between the zeros and check whether the function is above or below the x-axis at that point.
is convenient.

False, so in between the zeros the function is not greater than zero.
So the other regions are the where the function is greater than zero.
(,)U(,)
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